hi guys - sorry no updates not had the time at mo (x mass shit), been in flower for 2 days now was looking well, showing female preflower loads of em:yes then i have started to notice these black/brown spotting on some leaves (just appearing randomly) they appear as what seems like a yellow patch then a darkbrown / black spott, that seams to be getting bigger. had a look on the plant prob guides and no deff's looks quite like this, cant find it anywhere
- just watered with ph'd water last time with 10% run off to see if it would help flush any build ups out and doesnt seem to have helped.
wondered if i may not be giving enough feed, about 18 inch (roughly 7 weeks vegging 2 days flowering) and im on 10ml A & B per gal canna, feeding 2ltrs mixed in 15ltr pots about every 3/4 days
sorry cant post picks my camera is shit i am getting a new one soon - just the cost at the mo!
Anyone help? please
Hey Shadrack
Im new to Coco growing as well, but have found it a breeze so far (except for the Mite attacks :headbang)
However one thing I have learned is that you should be feeding the plants every day or every other day at the latest. Perhaps because you are waiting 3 or 4 days between feedings those plants are experiencing some deficiencies. The other ones may not be showing it becuase perhaps they are much lighter feeders.... I cant be positive about this, but it also would explain why your flush with plain water didn't seem to help at all.
I have a quick question though... How large are these black spots? I ask because I have noticed many many little tiny black spots on my lower leaves when I was not feeding strong or often enough. However this only happened after the whole leaf would begin to loose some of its dark green color and begin to yellow. The leaves would never recover, but when it showed up all the signs (yellowing leaves, necrosis, and leaves dying/falling) pointed to deficiencies caused by underfeeding.
I use GeneralHydro nutes, so I am not familiar with the Canna nutrient ratios, but I would say stick with Zoo's formula, but feed more often and you may find your plants picking back up. Everything else seems to be spot on except the frequency of your feedings... your temps are optimal, you are using good coco and good nutes, you say your pH is around 6.0 (I prefer 5.8 myself) and you give 10% runoff. Everything seems right on track bro!
Hope that any of this info helps, and I hope your lady gets healthy. If you can get any pics of the ladies it might help us to diagnose them better, not to mention I wouldn't mind seeing them mature:D
Be Well
:cool